Welding helmet



FIG. 1 is a perspective view of a welding helmet, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines form no part of the claimed design.

All surfaces not shown form no part of the claimed design. 

CLAIM The ornamental design for a welding helmet, as shown and described. 